n. 1. A two-masted sailing vessel, square-rigged on both masts. 2. A jail or prison on board a US Navy or Coast Guard vessel. 3. A jail or guardhouse, especially on the premises of a US military installation. [Short for BRIGANTINE. Senses 2 and 3, from the use of ships as prisons.] (click for a larger image) brigreplica of the 1857 brig USS Niagara |
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